Hibonite and Astrophyllite Physical Properties

Hibonite

Astrophyllite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.843.2-3.4

1 7.18

1.5 Fracture

Subconchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle

Uneven, Brittle, Metallic

1.6 Cleavage

{0001} good, {10 1 0} parting

Perfect on [001] imperfect on [100]

1.7 Mohs Hardness

7.5-83

2 10

1.8 Chemical Composition

(Ca,Ce)(Al,Ti,Mg)12O19

(K,Na) 3(Fe2+ ,Mn) 7Ti 2Si 8O 24(O,OH) 7Anthony et al , Handbook of mineralogy (2001)

Hibonite and Astrophyllite Chemical Formula

While comparing Hibonite and Astrophyllite physical properties, the important data you should know is its chemical composition. Since chemical formula defines the molecular structure of the crystal, most of the physical properties like color, tenacity, solubility are governed by Hibonite and Astrophyllite chemical formula.

Chemical formula of Hibonite- (Ca,Ce)(Al,Ti,Mg)12O19
Chemical formula of Astrophyllite- (K,Na) 3(Fe2+ ,Mn) 7Ti 2Si 8O 24(O,OH) 7Anthony et al , Handbook of mineralogy (2001)

Compare Blue Gemstones

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Hibonite and Astrophyllite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Hibonite and Astrophyllite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Hibonite and Astrophyllite Optical Properties during the identification of gemstone. Specific gravity of Hibonite is 3.2-3.4 whereas that of Astrophyllite is 3.2-3.4.